Sanitary napkin



FIG. 1 is a top view of a sanitary napkin, showing our new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a left side view thereof, the right side view being a mirror image; and,

FIG. 4 is a front side view thereof, the back side view being a mirror image.

The broken line showing of a sanitary napkin is included for the purpose of illustrating environment and forms no part of the claimed design. 

CLAIM The ornamental design for a sanitary napkin, as shown and described. 